Dirty water tank full indicator stays on or E5 displayed even when tank is empty; suction stops.

Safety first: Unplug the carpet cleaner and remove both tanks.

• Clean the dirty tank: Remove the dirty water tank and open any internal float chamber. Rinse thoroughly with warm water to remove soap residue, hair, and debris. Ensure the float moves freely up and down.
• Check float magnet: Many Electrolux tanks use a magnet in the float to trigger a reed switch. Confirm the magnet is still attached and not corroded.
• Inspect the sensor: Locate the tank full sensor or reed switch on the base where the tank sits. Clean the area and check for cracks or water intrusion.
• Check wiring: Follow the sensor wires back to the control board. Ensure the connector is firmly seated and wires are not pinched or broken.
• Test operation: With the tank removed, plug in and power on briefly. If the unit still shows full/E5 with no tank installed, the sensor or control board is likely faulty and should be replaced.